alleryਵਹਾਅ ਦੀ ਗਤੀ 18 km/h ਅਤੇ ਉੱਪਰ ਵੱਲ 10 km/h ਦੇ ਨਾਲ, ਨਦੀ ਕਿੰਨੀ ਤੇਜ਼ੀ ਨਾਲ ਵਗਦੀ ਹੈ?
A2 km/h
B8 km/h
C14 km/h
D4 km/h
Answer & Solution
Correct answer: D. 4 km/h
ਸਟ੍ਰੀਮ ਸਪੀਡ ਅੱਧਾ ਅੰਤਰ ਹੈ, (18 - 10) / 2 = 4 km/h।
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